html,body,h1,h2,h3,h4,h5,h6,p,ul,ol,dl,form,input {
  margin: 0;
  padding: 0;
}
*{
    box-sizing: border-box;
}
html,body{
    width: 100%;
    height: 100%;
}

ul,ol,dl{
    list-style: none;
}

a{
    text-decoration: none;
}

img{
    vertical-align: bottom;
}
button,input{
    outline: 0;
}
#app{
    width: 100%;
    height: 100%;
}  